The average age of 25 Boys in a Class decreases by 6 months when a New boy Takes the Place of A 20 Years old boy.Find the age of the new boy.
Answers
Answered by
3
Answer:
The average of new boy is 7.5 years.
New boy of age 'y' years is added and an old boy of age 20 years is removed. Also, in the question, it is told that the average age of 25 boys decreases by 6 months ( 0.5 years), when the substitution takes place. Thus, the avg. age of new boy is 7.5 years.
Similar questions